Method and apparatus for transceiving multi-code word in sc-fdma system

An apparatus and a method for transmitting/receiving multi-code word in an SC-FDMA(Single Carrier-Frequency Division Multiple Access) are provided to reduce an interference between symbols in a frequency selective fading environment. A demultiplexer divides a data stream of a user into the M number of sub-streams(S210). The M number of encoders and the M number of QAM(Quadrature Amplitude Modulation) mappers independently perform channel coding and QAM mapping on each of the M number of sub-streams(S220). The M number of QAM-mapped sub-streams are mapped to DFT(Discrete Fourier Transform) indexes by using a DFT mapper(S230). The DEF mapper applies DFT to the mapped signals(S240). The DFT-applied signals are mapped to sub-carriers corresponding to the user by using a sub-carrier mapper(S250). IFFT(Inverse Fast Fourier Transform) is applied to the sub-carrier mapped result signals, which are then transmitted via a transmission antenna(S260).